The Earth Moved

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eracode

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#298879 24-Jul-2022 10:16

Sitting quietly on a sofa in our lounge on the N Shore and felt a slight, single shudder under my butt. Felt like a small earthquake so I made a mental note of the time - 9:57 am.

Checked GeoNet - which I haven’t done for years - and it says that at 9:57 there was an “unnoticeable earthquake” of 1.3 scale, at 28 km depth, 20 km south of Hastings.

Amazed that I could feel something that small, that far away - must have a very sensitive butt.

Sometimes I just sit and think. Other times I just sit.

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#2945829 24-Jul-2022 10:20

You sure it's not just something you ate?😜

Sometimes I use big words I don't always fully understand in an effort to make myself sound more photosynthesis.

eracode

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#2945830 24-Jul-2022 10:23

floydbloke:

You sure it's not just something you ate?😜

Ha - there’s always that possibility - but no, this one wasn’t self-inflicted. 😁

Sometimes I just sit and think. Other times I just sit.

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#2945836 24-Jul-2022 10:41

Last nights curry?

Batman

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#2945841 24-Jul-2022 11:11

yet i can't feel myself moving through space-time at a million miles an hour!

insane

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#2945875 24-Jul-2022 13:11

Is it plausible for an earthquake shockwave to jave travelled that far in under a minute (assuming time is roughly synchronised)?

Having said that, I'm also on the shore and feel small unexplained jolts and wobbles from time to time. Has been a fair while since I've felt a strong one though.

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#2945878 24-Jul-2022 13:16

I get that and sometimes wonder if I’m suffering vertigo after finding nothing on GeoNet. The subtle creaks that often go with it suggest otherwise.

You're not on Atlantis anymore, Duncan Idaho.

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neb

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#2945928 24-Jul-2022 14:58

MadEngineer: The subtle creaks that often go with it suggest otherwise.

That's OK, none of us are getting any younger...

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#2945956 24-Jul-2022 16:19

Sometimes when I'm lying in bed and a truck drives past I can feel the house tremble and feel it even through the mattress.

eracode

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#2946049 24-Jul-2022 20:08

insane: Is it plausible for an earthquake shockwave to jave travelled that far in under a minute (assuming time is roughly synchronised)?

According to the interwebs, earthquake waves travel at about 8 km/sec. At that rate it would have taken about 45 seconds for it to reach my butt.

Sometimes I just sit and think. Other times I just sit.

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#2947954 29-Jul-2022 15:43

lol

frankv

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#2948014 29-Jul-2022 16:32

Who's a precious little princess then? lol

I think more likely is some kind of local event like, as others have said, a truck going past.

^Or maybe it's the next Rangitoto eruption starting, and GeoNet, the Labour government and Phil Goff are in cahoots to cover it up. Go and camp on the Beehive lawn where you know you'll be safe from it.^

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#2948052 29-Jul-2022 18:38

eracode: Checked GeoNet - which I haven’t done for years - and it says that at 9:57 there was an “unnoticeable earthquake” of 1.3 scale, at 28 km depth, 20 km south of Hastings.

I've had similar experiences from time to time later correlated on geonet. At one time I was using a cheap gas lift chair at home and felt actual bouncing from an event that really should have had no noticable effect.

It is remarkable how much can be felt from torque-y trucks and things like that. I'd guess so much depends on local geology. I recall working in a relatively recent 12 story office building. It was common to notice vibration from an occasional truck.

eracode

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#2948065 29-Jul-2022 20:50

I still dunno - but I was alone at home, sitting in a downstairs room that has a concrete slab floor, quiet street and house down a right-of-way - no way it was a truck. I understand the skepticism but I have felt many, many medium and weak earthquakes over a 70-year lifetime - spent my first 12 years in Plimmerton/Wellington where small earthquakes are a regular event. I felt the two weak Saturday afternoon Auckland quakes centred near Motutapu Island about ten years ago. I felt a small 1:00 am quake lying in bed in Sydney in the early 80’s - and they have virtually no quakes there ever. Felt a small mid-afternoon quake sitting in a bar at LAX fifteen years ago - confirmation came up on the bar’s TV a few minutes later.

I know what they feel like and know what I felt. A sensitive butt can be a blessing and a curse.

Sometimes I just sit and think. Other times I just sit.

neb

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#2948080 29-Jul-2022 21:09

eracode:
I still dunno - but I was alone at home, sitting in a downstairs room that has a concrete slab floor, quiet street and house down a right-of-way - no way it was a truck.

You'd be surprised at what can be felt on those. I have a seismic sensor mounted on a thick slab of concrete in the basement that easily detects the cat leaping in the upstairs bathroom window.

eracode

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#2948088 29-Jul-2022 21:13

neb:
eracode:

I still dunno - but I was alone at home, sitting in a downstairs room that has a concrete slab floor, quiet street and house down a right-of-way - no way it was a truck.

You'd be surprised at what can be felt on those. I have a seismic sensor mounted on a thick slab of concrete in the basement that easily detects the cat leaping in the upstairs bathroom window.

In trying to quieten the skeptics, I should have mentioned we don’t have a cat. Or a dog.

If your sensor is that sensitive, it must also detect you just walking around the house? How do you sort signal from noise, wheat from chaff?

Sometimes I just sit and think. Other times I just sit.

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